SIM copy and disabled menu's

[nightr]

Cingular sim cards locks out the "network selection" menu on phones. If I were to copy my sim card, would I be able to use this menu again?

[Gokhan_Nokiaz]

you can but search google there is lots of website out there which has lots of information

[PaoloWireless]

you can but search google there is lots of website out there which has lots of information

Rogers blocks the conditional Forwarding menus on its sim cards, does anyone know a way to enable them?